Test for swift_coroFrameAlloc

Author: tbkka

test/embedded/accessors.swift

@@ -0,0 +1,37 @@
+// RUN: %empty-directory(%t)
+// RUN: %target-swift-frontend %s -Onone -parse-as-library -enable-experimental-feature Embedded -c -o %t/main.o
+// RUN: %target-clang %target-clang-resource-dir-opt %t/main.o -o %t/a.out -dead_strip
+// RUN: %target-run %t/a.out | %FileCheck %s
+
+// REQUIRES: swift_in_compiler
+// REQUIRES: executable_test
+// REQUIRES: optimized_stdlib
+// REQUIRES: swift_feature_Embedded
+
+public class C {
+  public var x: Int {
+    _read {
+      yield(y)
+    }
+    _modify {
+      yield(&y)
+    }
+  }
+
+  var y: Int = 27
+}
+
+@main
+struct Main {
+  static func main() {
+    print("1") // CHECK: 1
+    let c = C() // CHECK: 27
+    print(c.y)
+    c.y = 28
+    print(c.y) // CHECK: 28
+    print("")
+
+    print("2") // CHECK: 2
+    print("")
+  }
+}